Lesson 16 Center Day 3

- Let’s practice counting, measuring lengths, and writing numbers.

Warm-up Number Talk: Add 20 and 1

Find the value of each expression mentally.

$65 + 20$
$85 + 1$
$65 + 20 + 1$
$65 + 21$

Activity 1 Introduce Counting Collections: Estimate and Count Up to 120

Activity 2 Centers: Choice Time

Choose a center.

Write Numbers

Center. Write Numbers.

Estimate and Measure

Center activity. Estimate and Measure.